On show until the 16th of February, Ai WeiWei’s grand “Stacked” installation was made from 760 bicycles attached to each other. It’s not a coincidence that the artist chose to use “Forever” bikes (made by one of China’s largest manufacturers) for his latest piece. His work is always referencing Chinese culture, political issues and in this case, mass production and the country’s most used transport. But the fact that the bikes are missing parts and attached to each other, immobile, distances them from their intended use as transportation.